GHSA-f8m3-jpxr-hm5x

bsdiff4 out-of-bounds write via patch file

Source: GitHub Advisory Database (reviewed) High CVE-2020-15904

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	bsdiff4	< 1.2.0	1.2.0

Details

As written in the advisory (Markdown source, shown as plain text).

A buffer overflow in the patching routine of bsdiff4 before 1.2.0 allows an attacker to write to heap memory (beyond allocated bounds) via a crafted patch file.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2020-15904 advisory
https://github.com/ilanschnell/bsdiff4/commit/49a4cee2feef7deaf9d89e5e793a8824930284d7 web
https://github.com/ilanschnell/bsdiff4 package
https://github.com/ilanschnell/bsdiff4/blob/9a84c2ee01f5ba0742d18c9f3b3d5244ae7fb302/CHANGELOG.txt#L30-L31 web
https://github.com/ilanschnell/bsdiff4/blob/master/CHANGELOG.txt web
https://github.com/pypa/advisory-database/tree/main/vulns/bsdiff4/PYSEC-2020-30.yaml web